Smartphone makers are in a race to go slimmer, and Tecno has just dropped an absolute stunner at MWC this year. The Tecno Spark Slim is only 5.75mm thick, making it one of the thinnest phones ever made. But what’s really impressive is the fact that the concept phone actually packs in some solid hardware — we’re talking a 5200 mAh battery, a 144Hz AMOLED display and more.
With a sleek design, premium-looking finishes, and powerful internals, it proves that a slim phone doesn’t have to compromise on features. While it's just a concept, its innovations could shape future devices. Here’s everything that makes the Spark Slim so special.
Ultra-slim and stunning design
At just 5.75mm thin, the Spark Slim is an engineering marvel. It boasts a unibody design that feels great to hold, featuring either a glossy stainless steel-like finish or a sleek ceramic panel. Gorilla Glass on the front adds durability while keeping the device ultra-premium. What’s really interesting is that Tecno actually had to add some artificial weight to the device to make it feel real.
A surprisingly large battery
Despite its slim profile, the Spark Slim packs a 5,200mAh battery that’s just 4.04mm thick! Even more impressive, it supports 45W fast charging, a serious feat given the challenges of heat dissipation in such a thin frame.
Impressive cameras
The phone sports two 50MP cameras on the back, separated by a futuristic LED notification strip. It’s not just stylish—it adds a high-tech touch that makes the device stand out.
Lightweight, yet carefully weighted
Weighing only 146g, the Spark Slim was intentionally given extra weight to avoid feeling too light. Tecno found the perfect balance to keep it comfortable and premium in hand.
A display that truly shines
The Spark Slim features a 6.78-inch AMOLED display with a crisp 1220p resolution and a buttery smooth 144Hz refresh rate. It also hits an incredible 4,500 nits peak brightness, making it easy to use even under direct sunlight.
Unfortunately, this beauty won’t be hitting stores—it’s just a concept. But Tecno promises to bring some of its innovative features to an actual device soon!
